On the base of above study, and with the structural system feature, we put forward economic of structural system analyzing method and model, which is base on value engineering theory.

在以上研究的基础上，并结合结构体系的特点，提出了基于价值工程理论的结构体系经济性分析的方法和模型。

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Construction method by steps is used for pre embedded parts of steel structure engineering foundation with easy construction, high accuracy and good quality, and the economic benefit is remarkable.

在钢结构工程基础预埋螺杆的施工中，采用一次就位分步施工法，施工简单、精度高、质量好，经济效益显著。

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Engineers have contributed enormously to the progress of human society in material wealth. Engineering science and technology is the method by engineers to promote social and economic development.

工程师为人类物质文明的进步做出了巨大的贡献，工程科技是工程师推动社会经济进步的手段。

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